Abbaye de Denain, Medieval abbey in Denain, France

Abbaye de Denain is an abbey in northern France that originated as a medieval religious community with buildings and surrounding grounds. Today, only archaeological traces and ground plans remain visible, as the site underwent major transformations over centuries.

Adalbert II of Ostrevent, lord of Ostrevent and father of ten daughters including Saint Renfroie, founded the abbey around 764, first at Berzelles near Flines on the Sambre. Charlemagne granted it property in 805, but it was destroyed by the Normans and rebuilt around 964 by Raynier au long Col. In 877 Charles the Bald gave it thirty-four manses of the village of Thiant.

The abbey is not named after its founder's family: Adalbert II d'Ostrevent founded it, and his daughter Renfroie, celebrated locally on 22 April, is linked to the site. From the early modern period it housed canonesses who needed sixteen quarters of nobility; only the abbess took vows, while the others could leave and marry.

The site is located at the edge of Denain and surrounded by roads and residential areas, making it easy to find. It is worth checking ahead which parts of the former complex are open to visitors, as only certain areas can be explored.

The abbey's community was made up of chanoinesses, women who had to prove sixteen quarters of nobility to enter. Only the abbess pronounced vows; the others were not cloistered, could leave the abbey and could marry.